Leadership can be defined as influencing others to achieve goals. Effective leadership depends on both traits of the leader and contingencies of the situation. Trait theories study what makes an effective leader, focusing on qualities like intelligence and self-confidence. Contingency theories emphasize that leadership style should match aspects of the situation like task structure and follower readiness. Contemporary views include transactional leadership which guides followers via rewards and punishments, and transformational leadership which inspires followers to transcend self-interest. Developing trust and empowering employees are also important issues for modern leaders.